Valve bag



Oct. 24, 1939. J, TOOKER 2,177,122

VALVE BAG Filed March 31, 1938- 3 Sheets-Sheet 1 INVENTOR John M Tooker Mg) MM ATTORNEY5 Oct. 24, 1939. J, TQOKER 2,177,122

VALVE BAG" iled March 51, 1958 a Sheets-Sheet z \NVENTOR John M Too/rer Oct. 24, 1939. J N TOOKER 2,177,122

VALVE BAG 3 Sheets-Sheet 5 Filed March 51, 1938 INVENTOR John M Too/(er M WMMQ Patented Oct. 24, 1939 UNITED STATES PATENT OFFICE VALVE BAG Application March 31, 1938, Serial No. 199,074

7 Claims.

The present invention relates to bags, and has special reference to paper valve bags.

The principal object of the invention is to provide a bag of this character having a novel and improved valve and closure therefor.

The invention is illustrated by way of example in the accompanying drawings, in which:

Figure 1 is a side view of a bag tube from which my improved bag may be formed;

Fig. 2 is a plan view of one end portion of the bag with the end thereof spread and flattened in forming a satchel end;

Fig. 3 is a similar view showing a closure sleeve for the valve applied thereto;

Figs. 4 and 5 are detail sectional views, on an enlarged scale, taken respectively on the lines 4-4 and 5-5 of Fig. 6;

Fig. 6 is a plan view of one end portion of the completed bag in flattened condition;

Fig. 7 is a view in perspective of the valve end or corner portion of a bag with its valve end open ready for the insertion of a filling nozzle therein;

Fig. 8 is a plan view of the upper end of a filled bag with the valve shown closed;

Fig. 9 is a detail sectional view. on an enlarged scale, taken on the line 5-4 of Fig. 8;

Fig. 10 is a view corresponding to Fig. 3 of a modified form;

80 Fig. 11 is a plan view of a blank from which the valve closure is formed;

Fig. 12 is a side view of one side of the completed valve closure;

Fig. 13 is a similar view of the other side;

Fig. 14 is a view in perspective of the valve closure; and

Fig. 15 is'a sectional view taken on the line ll-IS of Fig. 14.

The bag illustrated in the drawings may be made from a tube of paper 2 having one or more plies. The tube is closed at its ends and at least one of the ends is preferably closed by a satchel end having a valve therein. In forming this satchel end in accordance with the present invention, one end of the tube is slit on lines 4 and is further slit on lines 6 and the ends spread and flattened (Fig. 2). The slits 4 provide for the usual side flaps 8 and the corner flaps ill. The slits 6 form a tongue 12 in one of the end flaps of narrower width than said flap, and during the spreading and flattening operations the tongue is folded outwardly as shown in Fig. 2. Paste M is then applied over the side flaps 8 and end flaps i0. and the inner portion of the tongue I2, paste being omitted from the inner portions I6 of the side flaps and also from the outer end of the tongue i2.

The closure for the valve consists of a sleeve it! which may be formed of the blank sheet shown in Fig. 11. To form the sleeve, a sernl- 5 circular slit 20 is cut therein which forms a flap 22. Glue or paste 24 is applied to one side of this flap and to a portion of one end of the blank. The blank is then folded on lines 26 with its edges overlapping and secured together by paste 1G 28. The paste 25 at one end of the sleeve closes that end of the sleeve. and the paste on the flap 22 secures the flap to the overlying wall of the sleeve.

When the end of the bag tube has been spread, ll flattened and pasted as above described. the envelope or sleeve ill with the flap 22 on the underside, is positioned over the flattened end 0! the tube as shown in Fig. 3. The closed end of the sleeve 18 is secured to the margin of the un- 25 derlying flap by the adhesive that has been applied, and the outer end portion of the sleeve is secured by the adhesive to the inner portion of the tongue l2 and to the portions of the associated valve flap at the sides of the tongue. 25

When the sleeve It has been thus applied the spread end of the tube is folded on lines ill, the right-hand flap 8 (viewing Fig. 33 being first folded over the sleeve I8 and secured theretoand to one of the end flaps Ill by the adhesive paste 30 previously applied, and then the other side flap 8 is folded over in overlapping relation to the inner flap and is secured thereto by the paste previously applied and to the upper side of the sleeve, to eornplete the satchel end. As the fold- 35 ing lines 2- are substantially registered with the longitudinal edges of the sleeve, the side flaps I are tightly folded over and secured to the edges of the sleeve.

In filling the saihhel end, the filling nozzle 40 may be inserted through the open end oi! the sleeve 88. As the flap 22 is secured to the over lying wall of the 15, an opening in provided beneath the *f through which the end of the nozzle may extend into the interior of the 45 bag.

When the bag has been filled and the nozzle withdrawn, the projecting end oi the sleeve ll may be folded at its corners on previously creased diagonal lines 32, and then together with the r sleeve l8 folded on transverse lines and tucked beneath the ends of the overlapping side flaps 8. Paste is omitted from portions 34 of the side flaps so as to provide a free entrance to the folded ends of the tongue and sleeve. 5

The ends of the tongue and sleeve may thus be easily tucked in beneath the side flaps I so as to securely seal the end of the sleeve and thus the filling valve of the bag. The tucked in ends may be easily pulled out when it is desired to empty the bag.

The pasting of the sleeve to the end flaps, the tongue i2, and the side flaps greatly reinforces these parts, especially adjacent the valve where the strength is most needed. The folds at the corners of the side flaps adjacent the open end of the sleeve which are pasted to the sleeve en sures against the sleeve breaking away during filling and handling of the bag.

In the form shown in Fig. 10, the tongue i2 is made of substantially the same width as the sleeve i8 and a semi-circular opening 22' is cut in the under wall of the sleeve.

As will be evident to those skilled in the art, my invention permits various modifications without departing from the spirit thereof or the scope of the appended claims.

What I claim is:

l. A bag of the class described having a satchel end provided with side flaps and end flaps, one of said one flaps having the central portion thereof slit on longitudinal extending lines to form a tongue, said tongue being folded outwardly with its outer end portion extending outside of the bag, and a flattened sleeve having one end portion pasted over said folded tongue and its other end closed and pasted over the other end flap, the under side of said sleeve being slit to form a flap having its free end in proximity to the inner end of said tongue, said sleeve flap being pasted to the under side of the upper wall of said sleeve whereby when the outer end of the sleeve is opened a filling nozzle may be inserted through said outer end and beneath said sleeve flap, said side flaps being pasted in overlapping relation over said sleeve and end flaps.

2. A bag of the class described having a satchel end provided with side flaps and end flaps, one of said flaps having the central portion thereof slit on longitudinally extending lines to form a tongue, said tongue being folded outwardly with its outer end portion extending outside of the closed and pasted over the other end flap, the underside of said sleeve having an opening arranged adjacent the inner end of said tongue, and said side flaps being pasted over said sleeve and end flaps.

3. A bag of the class described having a satchel end provided with side flaps and end flaps, one of said flaps having the central portion thereof slit on longitudinally extending lines to form a tongue, said tongue being folded outwardly with its outer end portion extending outside of the bag, and a flattened sleeve pasted over said tongue and having one end open and extending outside of the bag, said sleeve opening into the interior of said bag, said side flaps being pasted over said sleeve and end flaps.

4. A structure according to claim 3 in which said sleeve is substantially oi the width of the space between the outer edges of the side flaps, and said tongue is narrower than said sleeve.

5. A bag of the class described having a satchel outside of the bag, the underside of said sleeve having an opening that opens into the interior of the bag, and said side flaps being pasted over said sleeve and end flaps.

6. A bag of the class described having a satchel end provided with side flaps and end flaps, a member secured over both of the end flaps and beneath the side flaps, one end 01' said member being in the form of a sleeve extending outside of the bag and opening into the interior thereof.

7. A structure according to claim 3 in which portions of corresponding ends of the side flaps are left unsecured to permit said ends of the tongue and sleeve to be tucked beneath said unsecured portions.

JOHN N. TOOKER.

CERTIFICATE or CORRECTION.

Patent No. 2,177,122.

October Zh, 1959 JOHN N. TOOKER.

of the above numbered patent requiring claim 1, for the word "one read end; Letters Patent should be read with this the case in the Patent Office. day of December, A. D. 1959.

column, line 26",

may conform to the record of Signed and sealed this 5th (Seal) correction as follows; Page 2, first and that the said correction therein that the same Henry Van Arsdale, Acting Commissioner of Patents.

The ends of the tongue and sleeve may thus be easily tucked in beneath the side flaps I so as to securely seal the end of the sleeve and thus the filling valve of the bag. The tucked in ends may be easily pulled out when it is desired to empty the bag.

The pasting of the sleeve to the end flaps, the tongue i2, and the side flaps greatly reinforces these parts, especially adjacent the valve where the strength is most needed. The folds at the corners of the side flaps adjacent the open end of the sleeve which are pasted to the sleeve en sures against the sleeve breaking away during filling and handling of the bag.

In the form shown in Fig. 10, the tongue i2 is made of substantially the same width as the sleeve i8 and a semi-circular opening 22' is cut in the under wall of the sleeve.

As will be evident to those skilled in the art, my invention permits various modifications without departing from the spirit thereof or the scope of the appended claims.

What I claim is:

l. A bag of the class described having a satchel end provided with side flaps and end flaps, one of said one flaps having the central portion thereof slit on longitudinal extending lines to form a tongue, said tongue being folded outwardly with its outer end portion extending outside of the bag, and a flattened sleeve having one end portion pasted over said folded tongue and its other end closed and pasted over the other end flap, the under side of said sleeve being slit to form a flap having its free end in proximity to the inner end of said tongue, said sleeve flap being pasted to the under side of the upper wall of said sleeve whereby when the outer end of the sleeve is opened a filling nozzle may be inserted through said outer end and beneath said sleeve flap, said side flaps being pasted in overlapping relation over said sleeve and end flaps.

2. A bag of the class described having a satchel end provided with side flaps and end flaps, one of said flaps having the central portion thereof slit on longitudinally extending lines to form a tongue, said tongue being folded outwardly with its outer end portion extending outside of the closed and pasted over the other end flap, the underside of said sleeve having an opening arranged adjacent the inner end of said tongue, and said side flaps being pasted over said sleeve and end flaps.

3. A bag of the class described having a satchel end provided with side flaps and end flaps, one of said flaps having the central portion thereof slit on longitudinally extending lines to form a tongue, said tongue being folded outwardly with its outer end portion extending outside of the bag, and a flattened sleeve pasted over said tongue and having one end open and extending outside of the bag, said sleeve opening into the interior of said bag, said side flaps being pasted over said sleeve and end flaps.

4. A structure according to claim 3 in which said sleeve is substantially oi the width of the space between the outer edges of the side flaps, and said tongue is narrower than said sleeve.

5. A bag of the class described having a satchel outside of the bag, the underside of said sleeve having an opening that opens into the interior of the bag, and said side flaps being pasted over said sleeve and end flaps.

6. A bag of the class described having a satchel end provided with side flaps and end flaps, a member secured over both of the end flaps and beneath the side flaps, one end 01' said member being in the form of a sleeve extending outside of the bag and opening into the interior thereof.

7. A structure according to claim 3 in which portions of corresponding ends of the side flaps are left unsecured to permit said ends of the tongue and sleeve to be tucked beneath said unsecured portions.

JOHN N. TOOKER.

CERTIFICATE or CORRECTION.

Patent No. 2,177,122.

October Zh, 1959 JOHN N. TOOKER.

of the above numbered patent requiring claim 1, for the word "one read end; Letters Patent should be read with this the case in the Patent Office. day of December, A. D. 1959.

column, line 26",

may conform to the record of Signed and sealed this 5th (Seal) correction as follows; Page 2, first and that the said correction therein that the same Henry Van Arsdale, Acting Commissioner of Patents. 

